[kupfer] help: Add missing full stop reported by Daniel

[Ulrik Sverdrup <usverdrup src gnome org>]

commit 962d924fd1e5abf0629d5f5ca413daa05e6894bd
Author: Ulrik Sverdrup <ulrik sverdrup gmail com>
Date:   Tue Mar 29 16:22:33 2011 +0200

    help: Add missing full stop reported by Daniel

 help/C/managing-plugins.page |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/help/C/managing-plugins.page b/help/C/managing-plugins.page
index 4f821c2..5ebc13d 100644
--- a/help/C/managing-plugins.page
+++ b/help/C/managing-plugins.page
@@ -23,7 +23,7 @@
         <p> Use one of the following methods:</p>
         <list>
           <item><p>Click the Kupfer icon in the notification area and select
-              the item <em>Preferences</em></p>
+              the item <em>Preferences</em></p>.
           </item>
           <item>
             <p>Search for the object <app>Kupfer Preferences</app> in Kupfer